hv electrical day1

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Electricity & Electronic Systems

SAFETY

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When are Safety Glasses required?

All students and visitors MUST ear safety !lasses at

any time there is any active la" activities

This includes the classroom and the lar!er la" area

#oaner !lasses are availa"le for visitors

Students must su$$ly their on !lasses

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%o do !et Safety Glasses?Glasses can cost as little as '()** a $air 

nstructor can sell you !lasses

Tool truc+s that visit school have very

comforta"le !lasses

Any auto $arts store ill stoc+ a variety of

!lasses

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,ontact lenses do not "elon! in

the sho$Many solvents- chemicals- fuels and $articles

can "e tra$$ed ne.t to- and dama!e- the eye

/ama!e com$ounded "y earin! contacts)

/o not ear contacts in the sho$ environment

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%o do see ithout contacts?

  Wear safety !lasses over $rescri$tion!lasses

0"tain side shields to use ith $rescri$tion!lasses 1availa"le in Weldin! de$t)2

  3rescri$tion safety !lasses ith side shieldsare a !ood investment

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4asic Electrical Theory

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What can you learn from this lesson?

f you understand ho an electrical circuit

is su$$osed to or+ 

And

You can use a 5oltmeter 

You can fi. electrical stuff 

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/efine Electricity

  The a"ility to $erform 6or+7 "y movin!

electrons "eteen atoms

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What do e need to ma+e an

electrical circuit 6Wor+7

4rea+ into !rou$s and rite a list of

the "asic requirements to control anduse electricity

  Thin+ of hat has to ha$$en to turn on

a li!ht)

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What do e need to ma+e an

electrical circuit 6Wor+73oer Source

  Wirin! or ,onductors  1insulated side and !round2

  ,ontrol /evice 1sitch2 

#oad

,ircuit 3rotection 1fuse2

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3oer Source

Alternator $rovides $oer for runnin! vehicle

1Alternator $rovides $oer for runnin! vehicle2

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#oad

Alternator $rovides $oer for runnin! vehicle

#i!ht "ul"- motor- solenoid- etc)

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,ontrol /evice

Alternator $rovides $oer for runnin! vehicle

Sitch- 8elay- ,om$uter 

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Wirin! or ,onductors

Alternator $rovides $oer for runnin! vehicle

nsulated and Ground

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,ircuit 3rotection

Alternator $rovides $oer for runnin! vehicle

Fuse or ,ircuit 4rea+er 

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Alternator $rovides $oer for runnin! vehicle

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Alternator $rovides $oer for runnin! vehicle

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Alternator $rovides $oer for runnin! vehicle

Electrical 6or+7 can "e in the form of heat ener!y

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Alternator $rovides $oer for runnin! vehicle

The li!ht !ets hot and !ives off li!ht

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Electrical

or+ can

 "ema!netism

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Ma!netism

 $ulls in the

solenoidand ma+es

the starter

turn

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Start on #a" 9:

  3oer Source

  Wirin! or ,onductors

  1insulated side and !round2

  ,ontrol /evice 1sitch2

  #oad

,ircuit 3rotection 1fuse2

/i h th 3 S

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/ia!rams sho the 3oer Source

at the to$- !round at the "ottom

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/ia!rams sho the 3oer Source

at the #eft- !round on the 8i!ht

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Wirin! /ia!rams

; Wirin! dia!rams illustrate ho a circuit is

su$$osed to or+ 

; f you +no ho it should or+- it is easier

to fi!ure out hy it doesn<t or+ 

Wh t l t i l

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What can cause an electrical

circuit to fail?

; A "ad or defective=  3oer Source

  Wirin! or ,onductors

  1insulated side and !round2

  ,ontrol /evice 1sitch2

#oad

,ircuit 3rotection 1fuse or circuit "rea+er2